Capabilities
- Collection and analysis of dredge and spoil ground sediments
- Design and implementation of pre– and post— dredging monitoring programs
- Analysis of the most cost and environmentally appropriate dredge plant and methodology
- Detailed 2– and 3-dimensional plume dispersion modelling
- Dredging impact and risk assessments for EES’s and panel hearings
- Development of Dredge Environmental Improvement Plan (EIPs)
- Development of dredge applications for Coastal Act Management Consent
Overview
As the pressure on our coastlines grows with continued economic and population growth, so does the requirement for safe boating navigation and mooring facilities, wider and deeper shipping ports and channels, as well as the creation of new and upgrading of the existing essential services lining our coasts.
Such matters often require the removal of marine sediments which have accumulated within our boat channels, or the deepening of the sea-bed where we require our infrastructure to be laid.
Marine dredging involves a significant amount of risk to the surrounding marine life, with the potential for damage from contaminated spoil or excessive turbidity a real risk.
Water Technology is one of Australia’s leading coastal engineering consultancies. Experienced in undertaking both large and small scale dredging investigations, Water Technology has an excellent track record for providing environmentally sustainable and cost effective solutions. The unique ability to combine our experience with leading edge technology for the analysis of processes including dispersion, mixing and deposition has us placed as a leader in this field. Our specialist expertise has also enabled us to apply, with success, for numerous Consents for Dredging around the Australian coastline.
Selected Projects
Martha Cove
Client : Watsons Pty Ltd
Detailed dredging studies for a large canal estate and marina development on the southeast coast of Port Phillip Bay. The investigations included sediment sampling and analysis, assessment of dredging and spoil disposal options, and successful application for consent for Construction of the Martha Cove harbour. and housing development required offshore dredging for navigation of large boats into the marina. Water Technology carried out extensive numerical modelling and analysis of the dredging and prepared EES documents and dredge applications for the works.
Port Adelaide Channel Deepening
Client : Kellogg Brown & Root
Hydrodynamic and suspended sediment modelling of a range of dredging and spoil disposal scenarios for the Adelaide Outer Harbour Channel Deepening EES. This included supervision of laboratory tests to provide reliable estimates of the sediment settling rates to be used in the dredge plume modelling.
Wyndham Harbour
Client : Prudentia Investments Pty Ltd
Detailed dredging studies for a proposed 900 berth marina on the north west coast of Port Phillip Bay. These included: sediment sampling and analysis, review of dredge and spoil disposal options, dredge plume simulations, assessment of mitigation measures, reporting as part of an overall EES, and development of an on-going monitoring program.
Pelican Point Grain Terminal, SA
Client : Flinders Ports
Development of a range of hydrodynamic and sediment transport models of Gulf St Vincent and the Port Adelaide River to investigate the likely impacts of dredging and spoil disposal operations associated with a proposed new grain berth at Pelican Point.
Boat Ramp Dredging Applications
Clients : Mornington Peninsula Shire and Bayside City Councils
Preparation and submission of successful dredge applications for maintaining utility and safe navigation at boat ramps around Port Phillip and Westernport Bays. This included sediment sampling and analysis, and coastal process assessments required to obtain 10 year dredging approvals at all sites.
Port of Melbourne Channel Deepening
Client : Port of Melbourne Corporation
Expert peer review of a range of hydrodynamic, wave and suspended sediment models used for assessing the effects of dredging associated with the Port of Melbourne Channel Deepening EES and Supplementary EES.